Communication method and apparatus

Abstract

A communication method and apparatus. A sidelink resource is determined that meets a quality of service requirement of to-be-transmitted data to improve data transmission efficiency in a 4G system, a 5G system, and/or a future communication system, for example, a 6G system. A first terminal device receives delay information, determines a first packet delay budget, and determines a resource for transmitting data on a sidelink. The delay information indicates a packet delay budget that data transmission is to meet, the first packet delay budget is a packet delay budget that is to be met in response to data being transmitted on the sidelink, and the sidelink is a link for transmitting data between the first terminal device and a second terminal device.

What is claimed is: 
     
         1 . A communication method, comprising:
 receiving, by a first terminal device and from a network device, delay information, wherein the delay information includes first delay information, and the first delay information includes a packet delay budget that is to be met in response to data being transmitted on a sidelink;   determining according to the first delay information, by the first terminal device, a first packet delay budget, wherein the sidelink is a link for transmitting data between the first terminal device and a second terminal device; and   determining according to the first packet delay budget, by the first terminal device, a resource for transmitting data on the sidelink.   
     
     
         2 . The communication method according to  claim 1 , wherein the first terminal device is a relay terminal device and the second terminal device is a remote terminal device; or the first terminal device is a remote terminal device and the second terminal device is a relay terminal device. 
     
     
         3 . The communication method according to  claim 1 , wherein the receiving the delay information includes receiving second delay information, the second delay information includes a packet delay budget that is to be met in response to data being transmitted on a first link, the first link is a link for transmitting data between a relay terminal device and a network device, and the relay terminal device is the first terminal device or the second terminal device. 
     
     
         4 . The communication method according to  claim 3 , wherein the receiving the delay information includes receiving third delay information, the third delay information includes a packet delay budget corresponding to a first quality of service flow, the first quality of service flow is a quality of service flow between a remote terminal device and the network device, and the remote terminal device is the first terminal device or the second terminal device. 
     
     
         5 . The communication method according to  claim 4 , wherein the determining, by the first terminal device, a first packet delay budget includes:
 determining, by the first terminal device, the first packet delay budget based on the second delay information and the third delay information, wherein the second delay information includes the packet delay budget that is to be met in response to data being transmitted on the first link, and the first link is the link for transmitting data between the relay terminal device and the network device.   
     
     
         6 . The communication method according to  claim 1 , wherein the method further comprises:
 sending, by the first terminal device, first indication information to the network device, wherein the first indication information indicates a second packet delay budget of data transmitted on the sidelink.   
     
     
         7 . The communication method according to  claim 1 , wherein the method further comprises:
 sending, by the first terminal device, first indication information to the second terminal device, wherein the first indication information indicates a second packet delay budget of data transmitted on the sidelink.   
     
     
         8 . The communication method according to  claim 1 , wherein the method further comprises:
 sending, by the first terminal device, second indication information to the second terminal device, wherein the second indication information indicates a third packet delay budget of data transmitted on the first link.   
     
     
         9 . A first terminal device, comprising:
 at least one processor; and   one or more memories including computer instructions that, in response to being executed by the at least one processor, cause the first terminal device to perform operations including:   receiving, from a network device, delay information, wherein the delay information includes first delay information, and the first delay information includes a packet delay budget that is to be met in response to data being transmitted on a sidelink;   determining according to the first delay information, a first packet delay budget, wherein the sidelink is a link for transmitting data between the first terminal device and a second terminal device; and   determining according to the first packet delay budget, a resource for transmitting data on the sidelink.   
     
     
         10 . The first terminal device according to  claim 9 , wherein the first terminal device is a relay terminal device and the second terminal device is a remote terminal device; or the first terminal device is a remote terminal device and the second terminal device is a relay terminal device. 
     
     
         11 . The first terminal device according to  claim 9 , wherein the delay information includes second delay information, the second delay information includes a packet delay budget that is to be met in response to data being transmitted on a first link, the first link is a link for transmitting data between a relay terminal device and a network device, and the relay terminal device is the first terminal device or the second terminal device. 
     
     
         12 . The first terminal device according to  claim 11 , wherein the delay information includes third delay information, the third delay information includes a packet delay budget corresponding to a first quality of service flow, the first quality of service flow is a quality of service flow between a remote terminal device and the network device, and the remote terminal device is the first terminal device or the second terminal device. 
     
     
         13 . The first terminal device according to  claim 12 , wherein the determining the first packet delay budget includes:
 determining the first packet delay budget based on the second delay information and the third delay information, wherein the second delay information includes the packet delay budget that is to be met in response to data being transmitted on the first link, and the first link is the link for transmitting data between the relay terminal device and the network device.   
     
     
         14 . The first terminal device according to  claim 9 , wherein the at least one processor is further configured to perform operations including:
 sending first indication information to the network device, wherein the first indication information indicates a second packet delay budget of data transmitted on the sidelink.   
     
     
         15 . The first terminal device according to  claim 9 , wherein the at least one processor is further configured to perform operations including:
 sending first indication information to the second terminal device, wherein the first indication information indicates a second packet delay budget of data transmitted on the sidelink.   
     
     
         16 . A network device, comprising:
 at least one processor; and   one or more memories including computer instructions that, in response to being executed by the at least one processor, cause the network device to perform operations comprising:   determining delay information, wherein the delay information includes first delay information, and the first delay information includes a packet delay budget that is to be met in response to data being transmitted on a sidelink; and   sending the delay information to a terminal device, wherein the terminal device includes a first terminal device and/or a second terminal device.   
     
     
         17 . The network device according to  claim 16 , wherein the delay information includes second delay information, the second delay information includes a packet delay budget that is to be met in response to data being transmitted on a first link, the first link is a link for transmitting data between a relay terminal device and the network device, and the relay terminal device is the first terminal device or the second terminal device. 
     
     
         18 . The network device according to  claim 16 , wherein the delay information includes third delay information, the third delay information includes a packet delay budget corresponding to a first quality of service flow, the first quality of service flow is a quality of service fl ow between a remote terminal device and the network device, and the remote terminal device is the first terminal device or the second terminal device. 
     
     
         19 . The network device according to  claim 16 , wherein the at least one processor is further configured to perform operations including:
 receiving first indication information from the terminal device, wherein the first indication information indicates a second packet delay budget of data transmitted on the sidelink.   
     
     
         20 . The network device according to  claim 16 , wherein the at least one processor is further configured to perform operations including:
 receiving second indication information from the terminal device, wherein the second indication information indicates a third packet delay budget of data transmitted on the first link.